Tim Challies, The Discipline of Spiritual Discernment, 2007, page 57.
By studying Proverbs and other portions of the Bible it often seems that discernment is a subset of wisdom. There seems to be a progression from knowledge, which refers to bare facts, to wisdom, which refers to understanding moral and ethical dimensions of facts and data, to discernment, which is the application of wisdom. Wisdom is a prerequisite to discernment. Discernment is wisdom in action.
Tim Challies, The Discipline of Spiritual Discernment, 2007, page 57.